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SF STILLAGUAMISH--AT JORDAN ROAD
   State:  Washington    County:  SNOHOMISH
   Latitude:  48 5' 43" North    Longitude:  121 58' 27" West
   Elevation:  195 feet
   Supporting WFO:  Seattle    
   Action Stage:  13.5'   Flood Stage:  14.5'   Moderate Flood Stage:  16'
   Major Flood Stage:  17'

Forecasts are calculated from a forecast time series that approximates flow at a 6 hour time step interval. Observed instantaneous peaks can be higher than model forecast peaks.

SF STILLAGUAMISH--AT JORDAN ROAD   (SSFW1)
Forecasts for Water Year 2025
Ensemble Date: 2025-05-14
 Forecast Period: May 14 to September 1
Exceedence
Probability 		Stage
feet 		Discharge
CFS 		Probable
Date of Peak
95 % 6.56 1217 2025-05-22
90 % 6.78 1418 2025-05-28
70 % 7.67 2378 2025-06-05
50 % 8.04 2905 2025-06-15
30 % 8.50 3672 2025-06-25
10 % 9.49 5638 2025-07-29
05 % 9.77 6304 2025-08-24

Peakflow exceedence plot for SSFW1

 Click to download runoff traces used in forecast.  Click for comma delimited data used in plot.csv icon